Vehicle-tire.



J. G. GRAMER VEHICLE TIRE. APPLICATION IILEDJULY 24, 1906.

Patented Ju1y 6 19092 vWITNESSES .fectually prevented, with wlnehfits na adjoining plate, 'lateral movement JESSE.GRANT CRAMER, OF EAST ORANGE, NEW

J'ERSEY.'

VEHICLEwTIRE Specification of Letters Patent.

" Patented July 6, 1909.

Application filed July 24, 1906'. Serial No. 327,497.

To all whom iii mag concern:

Be it-known that I, JEssE GRANT CRA'MER, of East Orange, in the countyof Essex} and State of New Jerse have invented a certaln new and usefuiImprovement in Vehiole-Tires, of which improvement the follow ing is aspecification.

y invention relates to tires for motor cars, bicycles, and othervehicles, of the tuu ar or pneumatic type, and itsobject is to provide,in a tire of such character, means, of simple and inexpensiveconstruction and ready applicability in connectionwith the ordinarvforms, whereby puncture of the tire and skidding or side slipping willbe ef out impairing the resiliency of the tire in service.

The improvement claimed is hereinafter fully set" forth. i

In the accompanying drawing: Figure 1 is a transverse section through apneumatic tire, illustrating an application of my invention; and, Fig.2, a partial face viewwof the same.

- In the practice of my invention, the tubular tire body 1, is, asheretofore, com osed of rubber, and may be of any of the fbrmsordinarily'used in tires of this general ty e, and is, as usual providedwith an inner tube, 2. A thread, 3, of rubber, is secured, as by beingvulcanized, to the periphery of theit'rre body, I; the outer face of the.tread having a central groove or recess, 4, on op osite sides of whichthe face is substantia y plane in cross section, andits entire width isslightly less than that of the tire body. A su port.- ing band or ring,5, of. tough and flexiblb ma-' terial, such as leather, is fitted inthegroove, 4, of the tread, the thickness of the band, 5, sing about onehalf the de th of the groove. A plurality .of inde en ently attachable,and detachable interloc 'ng protecting plates, 6, of metal, referablytempered steel, are disposed in tlie space within the groove 4, exteriorto the band, 5, the plates, 6, bein of such thickness that theiroutersides shafi be substantially flush with the outside of the tread,3, so as to'constitute, together with the portions of the periphery ofthe tread on each side of the groove, thebearing surface of the tire ontheroad. Each of the proteeting plates, 6, has a central tongue, 6,corresponding groove in the so as to prevent relative of the plates inthe groove,

1 4, of the tread, and slight spaces are left be tough. and flexiblematerial, mental in cross section and which fits against 7O inner head.of the rivet is leather, 9, is 'fitted against the purpose of keepingthe inner heads of the .;only centrally connected tween the end portionsof the plates, so as to allow of a llIIllilGd. degree-of relativemovement circumferentially.

Each of the'protecting plates, 6, is secured to the tire by a centralrivet,'7, the outer head of which is flush with the-outer face of theplate, and which passes through the plate, through the inner supportingring, 5, through the portion of the tread, 3, below the groove, throughthe tire body, 1, and through a band or ring, 8, of leather or analogouswhich is segthe inner surface of the tire body, 1. The

formed in the band, 8, and a thin protecting band or strip of the band,8, for

set of rivets out of contact with an inner band or ring, 10,01 softrubber, of substantially crescent shape in cross section, which isfitted inside of the strip, 9, and against which t e inner tube, 2,bears when inflated. Thepu ose of the band, 10, is to guard against thepossibility of chafing or wear of the inner, tube b T contact with therivet heads or'the hars strip, 9.

It will be seen that above described, the major portion of the bearingsurface of the tire is composed of metal plates which are so connectedtothe body of'the tire as to constitute a flexible ring, which not onlyeffectually protects the tire from puncture but also insures immunityfrom side slipping or skidding on m'ud, snow, or wet or greasy asphaltpavements, as well as on dry roads. The plates being independently andonly centrally connected to the body of the tire, any of them, if brokenor worn, may be readily detached and a new one substituted, wheneverdesired. Further, there being no'metal in or on the side walls of thetire, the highest degree of resiliency may be attained and the lates'being permits them to have a slight turning or pivotal movement so asto readily adapt themselves to any distortion of the rubber tread 3 froma vertical plane. I claim as myinvention and desire to se cure byLetters Patent:

The combination of a tubular tirebody, a

tread of resilient. material secured tlleretor' and having a centralperipheral groove, a supporting ring or band of tough and flexible orinterior surface of theunder the construction 8 material seated in saidgroove, a plurality of 1 body, independently and centrally fastenedmetal protecting plates pivotally resting on the supporting ring andwithin the groove, means for-interlocking said lates against andsecuring said protecting plates in dependently thereto, a protectingband or strip fitting inside the row of inner rivet heads, and a ring orband of resilient material fitting inside said protecting band orlateral movement, a ring or and of tough strip. 7

and flexible material fitting the outer ortion I 1 of the interiorsurface of the tubular ody, a JESSE GRANT CRAMER' plurality of rivets,each passing through one Witnesses:

of the protecting plates, the tread, and to J. SNOWDEN BELL, and throughthe ring or band inside the tire ELSIE M. HOPLER.

